I've come across a lot of people storing smoothies in mason jars on Pinterest, but that's totally impractical for someone that needs a smoothie on the school run! I've also come across my pouch but that seems too small for adult use. Any alternatives? I want to be able to just get one out of the freezer the night before, and grab it out of the fridge in the morning - no messing about with blenders at silly o'clock!
Any ideas?